<html>
  <head>
  </head>
  <body>
    <script>
      // This will log deprecation warning to console
      const MyTag = document.registerElement('my-tag');

      document.body.appendChild(new MyTag());

      thatThrows();

      function thatThrows() {
        throw new Error("Just an error thrown()");
      }
    </script>
  </body>
</html>
